/*
 * Copyright (c) "Neo4j"
 * Neo4j Sweden AB [https://neo4j.com]
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.neo4j.cypher.internal.util.helpers

import scala.util.control.ControlThrowable

sealed trait Try[+T] {
  def isFailure: Boolean
  def getOrElse[U >: T](default: => U): U
}

case class Success[+T](value: T) extends Try[T] {
  override def isFailure: Boolean = false
  override def getOrElse[U >: T](default: => U): U = value
}

class Failure[+T] extends Try[T] {
  override def isFailure: Boolean = true
  override def getOrElse[U >: T](default: => U): U = default
}

object Try {

  def apply[T](value: => T) = {
    try {
      Success(value)
    } catch {
      case e: VirtualMachineError  => throw e
      case e: InterruptedException => throw e
      case e: LinkageError         => throw e
      case e: ControlThrowable     => throw e
      case _: Throwable            => new Failure
    }
  }
}
